package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    //获取固定盐
    @Value("${reggie.salt}")
    private String salt;

    /**
     * 员工登录
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {


        //将提交的密码进行md5加密
        String password = employee.getPassword() + salt;
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //根据username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);//查询的唯一数据

        //没有查询到，登录失败
        if (emp == null) {
            return R.error("登录失败");
        }

        //比对密码
        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }

        //查看员工状态
        if (emp.getStatus() == 0) {
            return R.error("账号已封禁");
        }

        //将id加入到Session中
        request.getSession().setAttribute("employee", emp.getId());

        return R.success(emp);
    }

    /**
     * 员工退出
     *
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {

        //清理Session中保存的当前员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     *
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {

        //设置员工初始密码
        String password = "123456" + salt;
        employee.setPassword(DigestUtils.md5DigestAsHex(password.getBytes()));

        //设置其他初始值
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录的id
//        Long id = (Long) request.getSession().getAttribute("employee");

//        employee.setCreateUser(id);
//        employee.setUpdateUser(id);

        employeeService.save(employee);

        return R.success("新增员工成功");
    }


    /**
     * 分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){

        //分页构造器
        Page pageInfo = new Page(page,pageSize);

        //条件过滤器
        LambdaQueryWrapper<Employee> lqw = new LambdaQueryWrapper<>();
        lqw.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        lqw.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,lqw);

        return R.success(pageInfo);
    }


    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

        //修改数据
//        employee.setUpdateTime(LocalDateTime.now());
//        Long id = (Long) request.getSession().getAttribute("employee");
//        employee.setUpdateUser(id);

        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息");
        Employee employee = employeeService.getById(id);
        if (employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }



}
